Shape-induced frustration of hexagonal order in polyhedral colloids

Roel P.A. Dullens, Maurice C.D. Mourad, Dirk G.A.L. Aarts, Jacob Hoogenboom, J.P. Hoogenboom, Willem K. Kegel

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

The effect of a nonspherical particle shape and shape polydispersity on the structure of densely packed hard colloidal particles was studied in real space by confocal microscopy. We show that the first layer at the wall of concentrated size-monodisperse but shape-polydisperse polyhedral colloids exhibits significant deviations from a hexagonal lattice. These deviations are identified as bond-orientational fluctuations which lead to percolating “mismatch lines.” While the shape-induced geometrical frustration of the hexagonal symmetry suppresses translational order, bond-orientational order is clearly retained, indicating a hexaticlike structure of the polyhedral colloids
Original languageUndefined
Pages (from-to)028304-1-028304-4
Number of pages4
JournalPhysical review letters
Volume96
Issue number2
DOIs
Publication statusPublished - 2006

Keywords

  • IR-74134
  • METIS-232150

Cite this

Dullens, R. P. A., Mourad, M. C. D., Aarts, D. G. A. L., Hoogenboom, J., Hoogenboom, J. P., & Kegel, W. K. (2006). Shape-induced frustration of hexagonal order in polyhedral colloids. Physical review letters, 96(2), 028304-1-028304-4. https://doi.org/10.1103/PhysRevLett.96.028304
Dullens, Roel P.A. ; Mourad, Maurice C.D. ; Aarts, Dirk G.A.L. ; Hoogenboom, Jacob ; Hoogenboom, J.P. ; Kegel, Willem K. / Shape-induced frustration of hexagonal order in polyhedral colloids. In: Physical review letters. 2006 ; Vol. 96, No. 2. pp. 028304-1-028304-4.
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Dullens, RPA, Mourad, MCD, Aarts, DGAL, Hoogenboom, J, Hoogenboom, JP & Kegel, WK 2006, 'Shape-induced frustration of hexagonal order in polyhedral colloids', Physical review letters, vol. 96, no. 2, pp. 028304-1-028304-4. https://doi.org/10.1103/PhysRevLett.96.028304

Shape-induced frustration of hexagonal order in polyhedral colloids. / Dullens, Roel P.A.; Mourad, Maurice C.D.; Aarts, Dirk G.A.L.; Hoogenboom, Jacob; Hoogenboom, J.P.; Kegel, Willem K.

In: Physical review letters, Vol. 96, No. 2, 2006, p. 028304-1-028304-4.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Shape-induced frustration of hexagonal order in polyhedral colloids

AU - Dullens, Roel P.A.

AU - Mourad, Maurice C.D.

AU - Aarts, Dirk G.A.L.

AU - Hoogenboom, Jacob

AU - Hoogenboom, J.P.

AU - Kegel, Willem K.

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AB - The effect of a nonspherical particle shape and shape polydispersity on the structure of densely packed hard colloidal particles was studied in real space by confocal microscopy. We show that the first layer at the wall of concentrated size-monodisperse but shape-polydisperse polyhedral colloids exhibits significant deviations from a hexagonal lattice. These deviations are identified as bond-orientational fluctuations which lead to percolating “mismatch lines.” While the shape-induced geometrical frustration of the hexagonal symmetry suppresses translational order, bond-orientational order is clearly retained, indicating a hexaticlike structure of the polyhedral colloids

KW - IR-74134

KW - METIS-232150

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DO - 10.1103/PhysRevLett.96.028304

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Dullens RPA, Mourad MCD, Aarts DGAL, Hoogenboom J, Hoogenboom JP, Kegel WK. Shape-induced frustration of hexagonal order in polyhedral colloids. Physical review letters. 2006;96(2):028304-1-028304-4. https://doi.org/10.1103/PhysRevLett.96.028304